21038090

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19301}}^1$

素因数の和:19417

約数の個数: 16

約数和(自身を含む): 38217960

約数和(自身を除く): 17179870

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19301, 38602, 96505, 193010, 2103809, 4207618, 10519045, 21038090]

約数ペア:

[(1, 21038090), (2, 10519045), (5, 4207618), (10, 2103809), (109, 193010), (218, 96505), (545, 38602), (1090, 19301)]